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Add navigational status values #249

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Add navigational status values #249

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718b95d
Add navigational status values
OgreTransporter Aug 6, 2024
eb9fc3d
Add navigational status values
OgreTransporter Aug 6, 2024
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21 changes: 20 additions & 1 deletion src/libais/ais.h
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Original file line number Diff line number Diff line change
Expand Up @@ -456,10 +456,29 @@ class AisMsg {
bool CheckStatus() const;
};

enum AIS_NAVIGATIONAL_STATUS {
AIS_NV_STATUS_UNDER_WAY_USING_ENGINE = 0,
AIS_NV_STATUS_AT_ANCHOR = 1,
AIS_NV_STATUS_NOT_UNDER_COMMAND = 2,
AIS_NV_STATUS_RESTRICTED_MANEUVERABILITY = 3,
AIS_NV_STATUS_CONSTRAINED_BY_DRAUGHT = 4,
AIS_NV_STATUS_MOORED = 5,
AIS_NV_STATUS_AGROUND = 6,
AIS_NV_STATUS_ENGAGED_IN_FISHING = 7,
AIS_NV_STATUS_UNDER_WAY_SAILING = 8,
AIS_NV_STATUS_RESERVED1 = 9, // reserved for future amendment of navigational status for ships carrying DG, HS, or MP, or IMO hazard or pollutant category C, high-speed craft (HSC)
AIS_NV_STATUS_RESERVED2 = 10, // reserved for future amendment of navigational status for ships carrying dangerous goods (DG), harmful substances (HS) or marine pollutants (MP), or IMO hazard or pollutant category A, wing in ground (WIG)
AIS_NV_STATUS_TOWING_ASTERN = 11, // power-driven vessel towing astern (regional use)
AIS_NV_STATUS_PUSHING_AHEAD_OR_TOWING_ALONGSIDE = 12, // power-driven vessel pushing ahead or towing alongside (regional use)
AIS_NV_STATUS_RESERVED3 = 13, // reserved for future use
AIS_NV_STATUS_SART = 14, // AIS-SART (active), MOB-AIS, EPIRB-AIS
AIS_NV_STATUS_UNDEFINED = 15, // undefined = default (also used by AIS-SART, MOB-AIS and EPIRB-AIS under test)
};

// TODO(schwehr): factor out commstate from all messages?
class Ais1_2_3 : public AisMsg {
public:
int nav_status;
AIS_NAVIGATIONAL_STATUS nav_status;
bool rot_over_range;
int rot_raw;
float rot;
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4 changes: 2 additions & 2 deletions src/libais/ais1_2_3.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@ using std::abs;
namespace libais {

Ais1_2_3::Ais1_2_3(const char *nmea_payload, const size_t pad)
: AisMsg(nmea_payload, pad), nav_status(0), rot_over_range(false),
: AisMsg(nmea_payload, pad), nav_status(AIS_NV_STATUS_UNDEFINED), rot_over_range(false),
rot_raw(0), rot(0.0), sog(0.0), position_accuracy(0),
cog(0.0), true_heading(0), timestamp(0), special_manoeuvre(0), spare(0),
raim(false), sync_state(0),
Expand All @@ -32,7 +32,7 @@ Ais1_2_3::Ais1_2_3(const char *nmea_payload, const size_t pad)
assert(message_id >= 1 && message_id <= 3);

bits.SeekTo(38);
nav_status = bits.ToUnsignedInt(38, 4);
nav_status = (AIS_NAVIGATIONAL_STATUS)bits.ToUnsignedInt(38, 4);

rot_raw = bits.ToInt(42, 8);
rot_over_range = abs(rot_raw) > 126 ? true : false;
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